Low- and high-energy spectroscopy of O-17 and F-17 within a microscopic multiphonon approach
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F17%3A00474567" target="_blank" >RIV/61389005:_____/17:00474567 - isvavai.cz</a>
Nalezeny alternativní kódy
RIV/00216208:11320/17:10368633
Výsledek na webu
<a href="http://dx.doi.org/10.1103/PhysRevC.95.034327" target="_blank" >http://dx.doi.org/10.1103/PhysRevC.95.034327</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.95.034327" target="_blank" >10.1103/PhysRevC.95.034327</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Low- and high-energy spectroscopy of O-17 and F-17 within a microscopic multiphonon approach
Popis výsledku v původním jazyce
The extension of an equation of motion phonon method to odd nuclei is described step by step. Equations of motion are first constructed and solved to generate an orthonormal basis of correlated n-phonon states (n = 0,1,2,...), built of constituent Tamm-Dancoff phonons, describing the excitations of a doubly magic core. Analogous equations are then derived within a subspace spanned by a valence particle coupled to the n-phonon core states and solved iteratively to yield a basis of correlated orthonormal multiphonon particle-core states. The basis so constructed is used to solve the full eigenvalue problem for the odd system. The formalism does not rely on approximations but lends itself naturally to simplifying assumptions, as illustrated by its application to O-17 and F-17. Self-consistent calculations using a chiral Hamiltonian in a space encompassing up to three-phonon basis states generate spectra having a high level density, comparable to that observed experimentally. The spectroscopic properties are investigated at low energy through the calculation of moments, electromagnetic and beta-decay transition strengths, and at intermediate and high energy through the computation of the electric-dipole spectra and pygmy and giant dipole resonance cross sections. The analysis of the particle-phonon composition of the eigenfunctions contributes to clarify the mechanism of excitation of levels and resonances and gives unique insights into their nature.
Název v anglickém jazyce
Low- and high-energy spectroscopy of O-17 and F-17 within a microscopic multiphonon approach
Popis výsledku anglicky
The extension of an equation of motion phonon method to odd nuclei is described step by step. Equations of motion are first constructed and solved to generate an orthonormal basis of correlated n-phonon states (n = 0,1,2,...), built of constituent Tamm-Dancoff phonons, describing the excitations of a doubly magic core. Analogous equations are then derived within a subspace spanned by a valence particle coupled to the n-phonon core states and solved iteratively to yield a basis of correlated orthonormal multiphonon particle-core states. The basis so constructed is used to solve the full eigenvalue problem for the odd system. The formalism does not rely on approximations but lends itself naturally to simplifying assumptions, as illustrated by its application to O-17 and F-17. Self-consistent calculations using a chiral Hamiltonian in a space encompassing up to three-phonon basis states generate spectra having a high level density, comparable to that observed experimentally. The spectroscopic properties are investigated at low energy through the calculation of moments, electromagnetic and beta-decay transition strengths, and at intermediate and high energy through the computation of the electric-dipole spectra and pygmy and giant dipole resonance cross sections. The analysis of the particle-phonon composition of the eigenfunctions contributes to clarify the mechanism of excitation of levels and resonances and gives unique insights into their nature.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)
Návaznosti výsledku
Projekt
<a href="/cs/project/GA13-07117S" target="_blank" >GA13-07117S: Statistické přístupy ke kvantovým mnohočásticovým systémům</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2017
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Physical Review C
ISSN
2469-9985
e-ISSN
—
Svazek periodika
95
Číslo periodika v rámci svazku
3
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
14
Strana od-do
—
Kód UT WoS článku
000399144100001
EID výsledku v databázi Scopus
2-s2.0-85016469125